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Effects of d-amphetamine and pentobarbital under concurrent fixed-ratio schedules.
Pigeons were studied under a two-key concurrent fixed-ratio schedule of food presentation. During the first five sessions, the fixed-ratio requirements were 30 responses on one key (major key) and 120 responses on the other key (minor key): responding occurred almost exclusively on the major key. Wh...
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| Autor principal: | |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
1980
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| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1332949/ https://ncbi.nlm.nih.gov/pubmed/7420008 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1901/jeab.1980.34-107 |
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